Self-Powered USB hubs are generally recommended over Bus-Powered USB hubs, primarily depending on the attached USB devices (how many amps they require). Self-Powered hubs use a power adapter and output 5 volts / 500 milliamps to each USB port, whereas Bus-Powered hubs get power from the upstream USB port and output 5 volts / 100 milliamps to each USB port. All Digi Hubports are Self-Powered.

USB "active extension cables" are not recommended and unsupported. Consider using a Digi AnywhereUSB network-attached USB hub for applications that require a USB device to be further away from the computer than USB spec allows.